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G. H. OROKER. MACHINE FOR DELINTING COTTON SEED.

Nd. 408,796. Patented Aug 13, 1889.

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\ G. H. CROKBR.

MACHINE FOR DELINTING OOTTON SEED. No. 408,796. Patented Aug. 13, 1889.

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G. H. GROKER. MACHINE FOR DELINTING COTTON SEED.

No. 408,796. 4 Patented Aug. 13, 1889.

with textile machinery.

UNITED STATES PATENT OFFICE.

GEORGE HENRY OROKER, OF SEACOMBE, COUNTY OF CHESTER, ASSIGNOR OF ONE-HALF TO JOHN BLAOKXVALL CLARK, OF LIVERPOOL, ENGLAND.

MACHINE FOR DELINTING COTTON=SEED.

SPECIFICATION forming part of Letters Patent No. 408,? 96, dated August 13, 1889.

Application filed March 11, 1889. Serial No. 302,816. (No model.) Patented in England Mey 24, 1888, No. 7,641.

To all whom it may concern.-

Be it known that I, GEORGE HENRY CRO- KER, a subject of the Queen of Great Britain, residing at Seacombe, in the count-y of Chester, in the Kingdom of England, have in vented certain new and useful lmprovem cuts in Machines for Delinting Cotton-Seed (for which I have received Letters Patent in England dated May 24, 1888, No. 7,641,) of which the following is a specification.

This invention has for its object to provide an apparatus for depriving cotton-seed of the lint or fiber and external coating which at present are so injurious in the manufacture of cotton-seed cake.

The invention is best described by aid of the accompanying drawings, in which- Figure 1 is a side elevation of the apparatus, partly in section; Fig. 2, a cross-section on the line. 0 (I, Fig. 1, parts being broken away; Fig. 3, an enlarged sectional view of the spiral bars, having an abrasive surface and adjacent parts. Fig. tis a similar View to Fig. 3 still further enlarged, showing the way in which the coarseness of the abrasive surface is varied from the feed to the tail end of the machine.

In the drawings, A is a supporting-frame of any suitable construction, forming a support for the operative parts B, a drum, preferably cylindrical, mounted on and fixed to a horizontal shaft O, rotating in bearings O, supported by the frame A. In the drawings, the shaft O is shown horizontahbut in some cases it may be inclined.

The drum B consists of circular frames or drums D, preferably of metal, mounted on and secured to the shaft C, so as to revolve therewith, and wood staves D, which are laid close together and secured to the frames D in any desired manner, but preferably by means of bolts or screws. The drum B may be made entirely of iron suitably prepared for having card-clothing nailed on it in the manner well understood by those acquainted The outside surfaces of the staves D are clothed with cards (Z, similar to those used in carding cotton, or with brushes of wire or any other suitable material, which project from the surface of the staves and are firmly secured thereto.

Surroundin the drumB and concentric with it I place a skeleton cylinder E, formed of steel'bars in the following manner: A steel spiral bar 6 of square or rectangular shape passes round and round the drum B, and at. a short distance from the carding-cloth or brushes (Z on the drum B, say a little less than the thickness of cleaned cotton-seed.

'The pitch of the coils is preferably rather greater at that end of the machine in which the cotton-seed is fed and which has to deal with the seed which is still covered with lint or fiber than it is at the other end where the seed is delivered freed therefrom. At the feeding end we generally make the coils from one and onehalf to two inches apart and the delivery end from one to one and one-half inch. Between the threads of the spiral bar 6 one, two, or more bars e 0 (according to the pitch of the spiral bar 6 aforesaid) are arranged. They are preferably of a triangular shape, with the apex of the triangle outward and the opposite fiat side inward, and their angles do not quite touch either each other or the rectangular spiral bar 6. The faces of the bars a facing the drum B are not quite so close to the surface of the carding-cloth as the faces of the rectangular bars. (See Fig. 3.)

The bases of the bars cfaeing the drum B, and also the sides of the rectangular bar 6, are cut, preferably, with rasped or file-like teeth, as in Fig. 4, very coarse near the hopper F, Where the seed, which is covered with fiuffy matter, has to be first operated on, but finer and finer as they approach the other end of the machine from which the cleaned seed is delivered. The skeleton cylinder E is made in sections, which are jointed together as at c 6 Fig. 2, each section having longitudinal frame-bars G G, and an intermediate longitudinal bar or bars H, (though the latter are j, the end of whiehbears against; the ba frame-bars G G. The cylinder is supported by means of; jaws or brackets J, which are secured to the frame A by bolts 7' and fit over the bars G G aforesaid. The bolts work in slots j in the frame A for a reason hereinafter described, and each bracket .1 is provided with a clamping or tightening screw 's G G, as shown. By means of the screws and the slots j the cylinder E may be adjusted concentrically to the drum 1 as follows: To adjust it laterally, the screws .l of the upper and lower brackets J are slacked oft and the adjustment effected by the screws j in. the side brackets J, after which the screws j are again tightened up. The vertical adjustment is effected in a reverse manner by slacking off the screws in the side brackets and operating the serewsj in the top and bottom brackets. Each of the sections of the cylindcr E being removable, as aforesaid, it is evidentthat any of the bars (2 (3 when worn can be separately taken out for repair with very little trouble by simply removing the section which carries them; or the wear of the bars 0 r can be taken up by planing the adjacent faces 0 of the longitudinal frame-bars G G, so as to reduce the internal diameter of the cylinder E.

F is a feeddiopper, prcfcraldy provided with a feeding-screw 7:.

L L are pulleys; U, a belt, and I a worm and worm-wheel by which the feeding-screw 7.: receives its motion.

M is an exit-spout at the other extremity of the machine.

N is a driving-pulley.

The mode of operation is as follows: The cotton-seed is placed in the hopper l1, and is fed onto the drum 1% by the feeding-screw 7t: before the con'nnenccment of the triangular bars (2, but between the threads of the rectangular bar c, which commences earlier than the triangular bars 6'. The rectangular bar 0 feeds the cotton-seed forward, andthe drum B, whirling round in rapid rotation, keeps on striking the cotton-seed against the raspcd edges of the bars, the spiral nature of those bars rapidly causing the cotton-seed to approach the other extremity of the machine. The cotton drawn oil": the seed by the raspcd teeth is blown out between the bars into an outer casing O, and is thus separated from the seed. The seed traveling on gets first cleaned of its fiber, then of its outer rough surface, and in a polished condition leaves the machine through the exit-spout: M.

I claim as my invention- 1. In a machine for cleaning cotton-seed or t the like, the combination, with an inner rotatable drum provided with a stiff brush-surface, of an outer skeleton abrading'cylindcr,

concentric with the said drum, consisting of a spiral bar (2 in close proximity to the brushsurface, and having its sides cut with raspcd or tile-like teeth, and of one or more spiral bars c, alternating with but not quite touching the spiral bar 0 or each other, arranged with their inturncd faces at a suitable (11st'ance from the brush-surface and having said faces cut with rasped teeth, substai'ltially as set forth.

:2. In a machine for cleaning cotton-seed or thelike,thc cmnbination, with an inner rotatable drum provided with a sti ft ln'ush-surfacc, of an outer concentric skeleton abrading-cylinder consisting of a rectangular spiral steel bar (2, alternating with one or more triangular spiral steel bars 0, arranged with thenangles not quite touching each other or the rectangular spiral bar aforcsai d, the rectangle la-r bar (2 having a pitch decreasing as the exit end of the cylinder is approached and its innerfaee beinglocated in close proximity to the brush-surface, the triangular bars c having their bases arranged at a suitable distance from the said ln'ush-surface, and provided with raspcd teeth gradually decreasing in coarseness toward the exit, substantially as set forth.

3. In a machine for cleaning cotton-seed or the like, an inner rotatable drum provided with a stiff brush-surface and an outer fixed abrading-cylinder formed of a series of approximately-parallcl rasped bars 6, arranged circumferentially a short distance apart at a suitable distance from the brush-surface, in combination with a fixed. spiral bar 6, projecting beyond the abradirig-surface of the cylinder into close proximity with the brushsurface, substantially as set forth.

4. In a machine for cleaning cotton-seed or the like, the COl'lllJlllfllllOl], with an inner rotatable brush-drum I of the outer skeleton abradlug-cylinder E, surrouiuling said drum and divided longitudinally into sect ions, each separately removable, the brackets J, supporting said cylinder, and each adjustable in a given direction upon the machine-frame, a bolt-and-slot device j whereby the said brackets may be adjusted, and an adj ustin gscrcw j, jonrnaled in each of: said jaws and. adapted to adjust the cylinder within the same inv a direction at right angles to the adjust ment of the jaw, substantially as described.

ln testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

GEORGE HENRY (IROKER.

\Yitnesses:

GEO. (1. Dvnoxn, H. I Snoomuooe. 

